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6 Sheets-Sheet. 1.

(No Model.)

E. E. CLAUSSEN. PAPER BAG MACHINE.

No. 586,735. Patented July zo, 1897'.

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(No Model.) 6 Sheets-Sheet 2.

B. E. GLAUSSBN. PAPER BAG MACHINE.

No. 586,735. Patented July 20,1897.

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(KNO Model.) 6 Sheets-Sheet 3.

E. E. CLAUSSEN. PAPER BAG MACHINE.

No. 586,735. Patented July 20,1897.

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6 Sheets-Sheet 4.

mini #Hl i E. E. CLAUSSBN. PAPER BAG MACHINE.

Patented July 20 (No Model.)

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(No Model.)

No. 586,735. Patented J111y20, 1897.

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UNiTED STATES PATENT OFFICE.

EDWARD E. CLAUssEN, CEIIARTECRD, CONNECTICUT, AssICNoR To ALBERT H. WALKER, TRUSTEE, oF SAME PLACE.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 586,735, dated July 20, 1897. Appiionon ined July 20,1396. sean No. 599,791. (No man.)

To all whom it may concern.- v

Be it known that l, EDWARD E. CLAUssEN, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have 'invented certain new and useful lImprovements in Paper-Bag Machines, of which the following is a full, clear, and exact specification.-

This invention relates to improved machinery for automatically manufacturing square-bottomed paper bags from tucked paper tubing, and is herein shown as being adapted for manufacturing such bags in accordance with the method set forth in my Letters Patent No. 520,256, of May 22, 1894, although portions of this machine are also susceptible of use in other methods, including those wherein a single blank is operated upon instead of a double blank, as herein indicated.

The object of this invention is to provide simple, reliable, and rapid means for forming the diamond folds in bellows-sided tubular blanks preparatory to folding them into their final form. The subsequent operations of pasting, cross-folding, and closing the flaps to complete the bag are quite simple and may be performed in many ways already well known in this art; but the earlier preliminary operations of converting the blank into the diamond form is a much more difficult one on account of the intricacy of the right-am gled triangular folds and of the' plies which are folded over them to form the vsidefolds of the bottom. ln my present invention this object is accomplished by means of suction boxes or formers arranged in pairs, one member of a pair being on one side and the other member being on the other side of the blank. One of these members is journaled at one edge of thetube with its suction portion projecting across the upper side thereof, while the other member of the pair is journaled at the opposite edge with its suction-surface projecting beneath the tube. Thusthe suctionsurfaces of the two boxes of a pair are superimposed with the tube between them, while the axes of their bearings are at right angles to the tube. Thse axes are substantially coincident with each otherl and with the location ofthe characteristic primary transverse foldfline which is to be made in the blank.

The boxes are hollow, forming vacuum-chambers which communicate through their bearings with any suitable exhausting mechanism, and those walls of the two boxes which face toward each other are providedwith per forations in order to allow the suction to operate upon the blank which is held between them. These boxes are also provided with grippers, which are adapted to hold the plies of the blank against the perforated inner walls of the respective boxes, and the beveled inner ends of these clips serve as formers for defining the characteristic right-angled triangular folds which are to be formed in the bellows sides in the process of converting the blank into -the diamond-folded form. Mechanism is provided for operating these boxes and their respective cli ps in proper time with eachother and with the remainder of the ma-l chine.

The machine herein shown and described employs two pairs of these suction-boxes, one pair being arranged upon supports which are fixed relative to the framing of the machine, While the other pair of suction boxes is mounted upon a reciprocating carriage which moves toward and from the stationary pair of boxes, the two pairs thus coacting to fold a double blank in substantially the manner set forth in the Patent No. 520,256, above referred to.

Figure 1 of the drawings is a front elevation of the preferred construction of my improved paper-bag machine, showing a blank of sufficient length tomake two bags in position ready for the diamond-forming mechan# ismsto operate upon it and showing the striker in position to sever the next blank from the continuous tube, and also showing at the left a portion of the former from which the tucked tubing is drawn into the machine. Fig. 2 is a plan view oflthat which is represented in Fig. 1. Fig. 3 is a left-hand end view in section, taken on the line 3 3 of Fig. 1, looking in the direction of the arrows. Fig. 4 is an end view of the upper section of the mechanism shown in Fig. 3, showing the bottom-forming devices turned at right an` gles to the position occupied by them in the latter figure. Fig. 5 is a left-hand end view in section taken on the line 5 5 of Fig. 1. Fig.

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6 is an enlarge/d pla'n view, partly in section, of the bottom-forming mechanism. Fig. 7 is a front view 'of the mechanism of Fig. 6, partly in section, taken on the'line 7 7 of that figure. Fig. 8 is a planview, and Fig. 9 a front view, both in enlarged scale, of the bottom-forming mechanisms in the position'oceupiedby them at the conclusion of the diamond-folding'operation. Fig. 10 is a fragmentary plan view, andFig. 11 a side view, both partly in` section, of one of the boxes and its side clip mecha'nism.4 Fig. 12 is anend View of the devices of Fig. 10, showing one of the side clips and its cam. Fig. 13 is a sectional side view of a suction-box with its clip-retaining presserfoot. Fig. 14 is an end view, drawn to an enlargedscale, in vertical section, taken on' the line 14 14 of Fig. 1, looking toward the right as the machine appears in the latter figure. This line of section passes through the axes of oscillation of the suction-boxes and 71, but does not cut those boxes or their respective shafts.

In the various views, the numeral 2O indicates in a general way the bed of the machine, consisting mainly of the side frames 21 and 22, in which are journaled the various shafts and mechanisms, as hereinafter more fully described.

Motion is communicated to the machine by means of the pulley 23, mounted-on the shaft 24, which is journaled in theframes 21 and 22 and carries the pinion 25, meshing on each side into the gears 26 and 27 and fastened on the shafts 28 and 29, respectively.

On the right-hand side of the machine the shaft 2S has fixed upon it the gear 30, meshing into the gear 3l, which is mounted on the stud 32, fixed in the yoke 33. That yoke is loosely mounted on the shaft 36 and is clamped to the frame 21 bythe thumb-screw 34. The gear 31 meshes into the gear' 35, fastened to theshaft 36, which is journaled inthe frames 21 and 22 and has fixed upon it the lower rear drawing-roll 37. The gear 35 meshes into the gear 38, fastened to the shaft 39, which is also journaled in the frames 21 and 22'and carries the upper rear drawing-roll 4Q. Fastened to the shaft 36 is also the gear 41, meshing into the pinion 42, rotatably mounted on the stud 43, which also forms a swiveling connection for the arms 43 and 43h. T he pinion 42 meshes with the gear 44, which is fastened to the shaft 45, carrying the lower front'drawingroll 46. The gear 44 meshes again into the gear 47, which is fastened to the shaft 48,'carryiug the upper drawing-roll 49. The shafts 45 and 48 are journaled in the arms 50 and 51, which are fixed on the shaft 52, journaled in frames 21 and 22, and are causedto vibrate by means of the projection 54, which engages with the cam 53. That cam is so formed as to carry the arms and their rolls 46 and 49 backward toward'the rolls 37 and 40 just before the blank is severed, so as to form a slack in the tube, as shown in Fig. 1.

Fastened to the shaft 28 near the frame 22 is a ruiter-gear 60, meshing into the miter-gear 61', fastened on the vertical shaft 62, which is j ournaled in the frame 22.v of the vshaft 62 is a miter-gear 63, meshing into the miter-gear 64, which is fastened on the striker-shaft 65. That shaft is journaled in bearings o`n the frame 22 and carries the striker-arm 66, which revolves across the path of the tube, carrying it against the serrated knife67and severing a blank therefrom at each revolution.

The reciprocating .carriage 74 is fitted to slide upon the frames 2l and 22, as best shown 'in' Figs. 3 and 4, and is provided with the lugs 74g 74, to vwhich is attached the connectingrod 75 by means of the stud 76. The other end of the connecting-rod 75 is jointed to the cam-arm 77 by means of the pin 78, which is pivotally mounted upon the cross-shaft 52,

At the upper end and receivesa vibratory motion through the projection 77a, .which engages in a groove of the cam 79, which is fixed upon and rotates with the shaft 28.

The carriage 74 is provided with the upwardly-extending arms 74, 74", 74, and 74d. At the upper ends of these arms are journaled the suction-boxes 70 and 71 upon axes which are in line with each other and transverse to the direction of movement'of the carriage 74, located in the-horizontal plane of the tube to be operated upon. The upper box 70 is journaled on the arms 74c 74d and lies above the paper tube, while the lower box 71 is journaled on the arms 74a 74" and lies below the paper tube. i

The arrangement of the bearings and the means whereby the exhausting apparatus is connected therewith arel best shown in Figs. 6, 7, 10, 11, and 14. I The suction-boxes are preferably rectangular in outline and are hollow, with perforations through those walls thereof which are to come in contact with the paper-bag blank. The lower suction-box 71 is attached to or integral with the shaft 80, which is journaled in the arms 74:L and 74b and has fixed upon its outer end the arm 81, which, by 'means of the rod 82, is connected with the cam-arm 83, pivoted on the stud 52. The arm 83 is also provided with a projection 84, which engages with a cam-groove cut in the side of the gear 30. The upper suctionbox 7() is similarly provided with the shaft 90,

-journaled in the arms 74 and 74d, and by ,means of the arm 91, the rod 92, and the calnarm 93 is operated by a cam-groove cut in the side of the gear 28. gears 30 and 26 are so formed as to cause their respective suction-boxes I71 and 70 to oscillate upon their bearings from the position shown in Fig. 7 to that shown in Fig. 9, the axes of these bearings being in line with each other and with the location of the primary 'transverse-fold line characteristic of this typevof paper bag.

The suction-boxes 72 and 73 are similar to the boxes 70 and 71 and are similarly mounted at the upper ends of the fixed arms 21, 21",

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These grooves in the 21, and 21, those arms being attached to or integral With the side frames 21 and 22, as'

best shown in Figs. 5, 6, and 7, the upper suction-box 72 being mounted on the arms 21c 21d, While the lower box 7 S is mounted on the arms 21a 211. These suction-boxes are provided with the shafts 100 and 110, arms 101 111, rods 102 112, cam-arms 103 118, which engage with cam-grooves in the faces of the cam 106 and the gear 27, respectively. These grooves are so timed with relation to the grooves in the sides of the gears 26 and 30 as to causeeach pair of suction-boxes to open and close simultaneously, and thegroovc in the cam 79 is so timed with relation to the suction-box cams as to move the carriage 7 i Y Afrom the position shown in Figs. G and to that shown in Figs. S and 9 simultaneously with the opening of the two pairs of suctionboxes.

As a means of exhausting the air from the interior of the suction-boxes Ihave shown in Figs. 1 and 2 an exhausting-fan F, which is connected with the two pairs of suction-boxcs by means of the pipesF F2 F7 F8. ln the main pipe leading to the fan is located the oscillating valve F8, Iwhich is connected, by means of the rod F4, to a cam-arm F5, which is loosely supported upon the cross-shaft 52 andis provided with the projection F, engaging in a groove in the side of the cam 7 9 on the shaft 28. That cam groove is so formed as to open and close the valve F3 in the main suction-pipe in suitable relation to the operating time of the suction-boxes.

The mannerin which the suction-pipes F', F2, F7, and Fs communicate with their respective suction-boxes is best shown inliigs. 3, 10, and 11. Those pipes open into an interior chamber in the hubs 2lc 74c and 21f 74f, respectively, each ot' which forms the inner bearing for its adjacent suction-box. From these interior chambers communication is made with the suctionsboxes, as best shown in Figs. 10 and 1l, the shafts SO, 90, 100, and 110 being considerably smaller than the airchambers through which they pass and being connected with their respective suctionboxes by a cross-bar, as best shown by 80 in Fig. 11. The outer or connecting-rod ends of these shafts pass through stuffing-boxes s, by means of which the chamber is rendered externally air-tight in the usual manner.

Each of the suction-boxes is provided with a pair of clips c and c', which are journaled in hubs c2, adjacent to the edges of the boxes. These clips are fitted to swing overseas to clamp the respective plies of the blank upon th blank-engaging walls of their suctionboxes and are beveled art their outer ends so as to coincide with and define the triangular folds characteristic of a bellows-sided squarebottomed bag, the beveled edges of the clips being so located upon the suction-boxesas to engage the plies of the blank at those portions thereot which are to form the aforesaid triangular folds. A downwardly-projecting portion of each of the clips is made to engage with a spiral groove cut in the cams e3 c4, which are fixed upon the oppos'te ends of the shaft c5, journaled in bearings preferably integral with the backs of the suction-boxes and transversely thereto. The grooves inY the cams ci are right-handed and the grooves in the cams c4 are left-handed, so that when the cam-shafts c5 are turned in one direction they will simultaneously close both membersof each pair of clips and will open them when turned back. The arrangement and relation of the clip and its operating means to the suction-boxes is best shown in Figs. 10, 11, and 12. rlhe shafts c5 and their clips are operated by means of pinions c, iixed upon the ends of their respective shafts, and those pinions engage with the sectors e7, which are journaled upon cylindrical portions of the hubs 21, 2 71C, and 74f. The sectors c7, which operate the clips upon the suctionboxes 7 O and 7l, are mounted upon the hubs 74f 74, respectively, which form the bearings for those boxes. These sectors are connected by means of the rods e8 and o9 to the cam-arms c1u and c, respectively, the former engaging with the cam cl2, while the latter engages with a groove cut in the side of the cam 53, both fixed upon the shaft 28. These ca'ms are so formed as to cause their respective sectors and clips to be operated simultaneusly.

The sectors c7, which operate the clips upon the suction-boxes 72 and 73, are mounted upon 'the hubs 21f 21e, respectively, and are connected. by means of the rods cl3 c tothe cam-arms cli'c, which are loosely mounted upon the shaft 200 and engage with the cams c and c, respectively, by means of which the two pairs ot' clips carried upon the suction-boxes 72 and 73 are operated simultaneously with each other and with the clips mounted upon the suction-boxes and 71.

The cams which operate the sectors c7 and the clips are so formed as to allow those sectors to follow the oscillatory movement of their respective suction-boxes as the latter are swung from the position shown in Figs. 6 and 7 to that shown in Figs. 8 and 9, so as to retain the clips in contact With their respective plies. Asa means for compensat ing for the slight irregularity that may occur in practice in thusV causing the sectors to follow their respective boxes I preferably pro- ICO iro

vide each of the clip cam-shafts c'i with a presser-foot device (best shbwn .in`1Fig. 13) for the purpose of pressing those "slrafts tolward the two ends of their oscillatory move- It consists of arms d,

' of spring-cases d', pivotally attached to the under side of each of the suction-boxes. Each of these contains a spring d2, which pressesr against a pin in the upper end of the arm d, thus serving to press that arm toward one or the other of its extreme positions.

The suction-pipes F7 and F8, which communicate with the suction-boxes 70 and 71, connect with the main suction-pipes F and F2 by telescoping joints,which allow of the movement of those pipes F7 and F8 with the carriage 74.

' The operation of this machine is as follows: The bellows-sided tubing is drawn from the former (shown in the left-hand part of Fig. 1) by means of the drawing-rolls 37 and 40, passing beneath the serrated knife 67 and between the drawing-rolls 46 and 49. The drawing-rolls are so geared with relation to the revolutions of the striker as to feed through a suit-able double length of tubing for each of those revolutions, and the front pair of drawing-rolls 46 and 49 are, by means of their arms 50 and 51, moved backward toward the drawing-rolls 37 and 40 just previous to the severing of the tube by the striker in order to form a slack in the tube to facilitate the cutting olf of the blank, as shown in Fig. 1. The forward end of the double blank passes from the drawing-rolls 46 and 49 to and between the suction-boxes 70 and 71 at a ti-me when the carriage 74 is at that end of its stroke nearest to the drawingroll, as shown in Fig. 1, the forward end of the blank passing to and between the suction-boxes 72 and 73. When the blank reaches its proper position with relation to the suction-boxes, the valve F3 is turned by means of its groove' in the cam 79 to the position shown in Fig. 1, thus permitting the air to be drawn by means of the exhaust-fan F from all four of the s-uc.

tion-boxes simultaneously, thus drawing the adjacent-plies of the blank against the perforated walls of those boxes and slightly opening the blank, as shown in Figs. land 7. While the blank is in this position the clips c and c are rocked by means of their cams c3 and c",

the sectbrs c7, and the cams 53, c, c, and C18 l into the openings of the bellows folds thus made by the operation of the suction through y the boxes, -grippingeach of the side plies of the blank upon its adjacent suction-box surface. l

Meanwhile t-he carriage, 74 is moved forward by means of its cam 79 at approximately the speed of that portion of the blank which is being .fed by the 'rolls 46 and 49. Simultaneously with this forward movement of the-carriage the suction-boxes '70 and 71 and 72 Aand 73;

are opened in opposite directions upon their respective bearings by means of the cams 26, 30, 27, and 106, and this opening movement of the box-es and advancing movement of the carriage are continued until they reach the\ position shown in Figs. 8 and 9thus expanding the middle reach of the blank, through` the transformations shown in Figs. 10 and 11 of the above-mentioned patent, No. 520,256, l

to the condition shown in Fig. 12 thereof.

The valve FS is then closed, so as to stop the operation of the suction, the clips c and c' are opened, and the blank thus released from the suction-boxes is transferred to suitable devices for cutting apart the two blanks and for pasting and completing the bottom folds. When thus released from the blank, the carriage moves back toward the drawingroll to receive the succeeding blank and the suction-boxes resume the position shown in Figs. 1 and 7 in time to engage with and operate upon that blank.

The length of the blank is determined by the gearing and may be changed byreplacing the gear 30 with a gear of the desired size, adjusting the gear 31 into mesh therewith by means of its yoke 3-3.

It is not an essential feature of this invention that the folding devices be used in duplicate, operating upon a double blank, as herein shown, as the carriage 74 and the devices mounted thereon `may with equally good results be employed in connection with a sin gle blank, performing its work upon that single blank in precisely the same manner as that work is herein shown to be performed in conjunction with the suction-boxes 72 and 73 upon a double blank, or the suctionboxes 72 and 73, journaled upon a stationary portion of the machine., may receive single blanks from any convenient blank-severing mechanism, the diamond-folded blanks when completed being transferred by means of any suitable take-od device tol any suitable iiap folding and pasting devices. Therefore either of the two sets of devices which are herein shown and described as operating conjointlyupon a double blank may be adapted to the folding of single blanks, upon either a moving or a station-ary bed, by changes easily within the range of mechanical skill on. the part of a mechanic practiced in the art of making and using paper-bag machinery.

An important feature of this invention is the arrangement whereby the twoA members of a pair of suction-boxes are journaled concentrically with their common axes located in the plane of the blank to be operated upon, thereby enabling the primary transverse-fold lines of the blank to be made in substantial coincidence with that common axis of the boxes. This is verydesirable, inasmuch as those folds, if made upon lines not coinci- -dent with the axis of oscillation of their fold- IOO IIO

the desired primary transverse fold, and having an overhanging suction-surface extending across the plies to be folded,with an edge defining the line of the fold to be made, sub A stantially as described. 2. Means for forming the primary transverse fold in a paper-bag blank, consisting of a suction-box j ournaled substantially in the plane of the blank to be folded, and having a perforated surface for engaging therewith,

a pair of clips mounted upon the opposite edges of the suction-box, having beveled ends which in their closed position serve to define right-angled triangular folds in the blank, the suction-box having also mounted thereon a shaft and cams for simultaneously operating the clips.

3. Means for forming the primary transverse fold in a paper-bag blank consisting of a pair of suction-boxes disposed on the opposite iiat sides of the blank and supported on independent bearings at the opposite edges thereof, the axes of the bearings being substantially coincident with each other and with the desired location of the transverse fold line of the blank, substantially as described.

4. Means for forming the primary transverse fold in a paper-bag blank, consisting of a pair of suction-boxes, having independent bearings located at opposite edges of the blank, their axes being coincident with each other and with the plane of the blank, the blank-engaging portions of the suction-boxes projecting from their respective bearings past each other upon opposite sides of the blank, and having perforations in their adjacent walls, with means substantially as described for simultaneously oscillating the boxes away from each other upon their respective bearings.

5. In a paper-bag machine, in combination with oscillating members thereof,having clips mounted thereon consisting of a clip-operating cam-shaft, a toothed pinion thereon, and

a toothed gear journaled concentrically with the axis of the oscillating member, and engaging with the pinion, with means for operating the oscillating member and the clips, in suitable time and relation to each other, sub stantially as described.

(i. Means for diamond-folding a doublelength, bellows-sided blank, consisting of two` pairs of oppositely-disposed suction-boxes, .one pair being arranged to oscillate upon stationary bearings, and the other pair being arranged to oscillate upon a movable carriage, with means for moving the carriage so as to carry the suction-boxes mounted thereon to- Ward and from the boxes mounted on the stationary bearings.

7 Means for diamond-folding a doublelength, bellows-sided blank, consisting of two pairs of oppositely-disposcd suction-boxes, one pair being arranged to oscillate upon stationary bearings, and the other pair being a1'- ranged to oscillate upon a movable carriage, with means for moving the carriage toward and from the boxes mounted on the stationary bearings, each of the suction-boxes being provided with a pair of bevel-ended clips for defining the right-angled triangular side folds in the blanks, substantially as described.

8. The combination of a pair of folding sue tion-boxes arranged to oscillate upon stationary bearings toward and from each other, a pair of suction-boxes similarly mounted upon a moving carriage, with means for exhausting the air from both pairs of suction-boxes and for moving the carriage so as to carry one of the two pairs of suction-boxes toward and from the other, substantially as described.

EDVARD E. CLAUSSEN.

Witnesses:

WILLIAM A. LORENZ, W. II. IIoNIss. 

